Timely spraying regulator to resist stress and increase yield of wheat

1. Paclobutrazol. Spraying 50 kg 200ppm paclobutrazol solution per mu at wheat jointing stage could dwarf plants and enhance lodging resistance and drought resistance. It can also treat powdery mildew and improve the absorption and utilization of nitrogen in plants. Second, Dwarf Zhuang Su. For the wheat field with large population and prosperous growth, 50 kg 40~50ppm solution was sprayed with 5% Daizhuangsu water agent per mu at the jointing stage to control the elongation of internodes, which can inhibit the vegetative growth of wheat, promote reproductive growth, make the plant stout, thicken the leaves and enhance its lodging resistance. If used in combination with 2pyr4Mel D, it can also control broad-leaved weeds in wheat field. Third, the growth hormone. In the jointing stage of wheat, 1520 ml / mu of auxin was sprayed on the leaves of 50 kg of water, which could inhibit Internode elongation, prevent lodging in the later stage and increase yield by 20%. Fourth, ethephon. Spraying 50 kg 100~300ppm ethephon solution on the leaf surface of wheat from booting to filling stage can increase the seed setting rate and promote grain fullness. 5. Naphthylacetic acid. Before jointing, 25ppm naphthalene acetic acid was sprayed once, and then 20ppm naphthalene acetic acid was sprayed on the spike 7 days after flowering, which could increase seed setting rate, promote grain fullness and increase yield by 15% per mu.